package com.itheima.reggie.filter;

import com.alibaba.fastjson.JSON;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Slf4j
@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {
    //路径匹配符,支持通配符
    public static final AntPathMatcher PATH_MATCHER =new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
//        HttpServletRequest request = (HttpServletRequest) servletRequest;
//        HttpServletResponse response = (HttpServletResponse) servletResponse;
//
//        String requestURI = request.getRequestURI();
//        log.info("拦截到请求:{}",requestURI);
//        //定义不需要处理路径
//
//        String[] urls = {
//                "/employee/login",
//                "/employee/logout",
//                "/user/login",
//                "/user/logout",
//                "/backend/**",
//                "/front/**",
//                "/common/**"
//        };
//        //2.判断本次请求是否需要处理
//        boolean check = check(urls, requestURI);
//        //
//        if(check){
//            log.info("本次请求{}不需要处理",requestURI);
//            filterChain.doFilter(request,response);
//            return;
//        }
//        //
//        if(request.getSession().getAttribute("employee")!=null){
//            log.info("用户已登录,登录id为:{}",
//                    request.getSession().getAttribute("employee"));
//            Long empId = (Long) request.getSession().getAttribute("employee");
//            BaseContext.setCurrentId(empId);
//            filterChain.doFilter(request,response);
//            return;
//        }
//        Long userID = (Long) request.getSession().getAttribute("user");
//        if(userID != null) {
//
//            //向本地线程变量中存放当前用户的id
//            BaseContext.setCurrentId(userID);
//            log.info("LoginCheckFilter:我已经是登录状态了，直接放行！");
//            filterChain.doFilter(request,response);
//            return;
//        }
//
//        log.info("用户未登录");
//        //
//        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
//        return;

    }
//    public boolean check(String[] urls,String requestURI){
//        for (String url : urls) {
//            boolean match = PATH_MATCHER.match(url, requestURI);
//            if(match){
//                return true;
//            }
//        }
//        return false;
//    }
}
